CNC Spindle Shank Standards — BT, SK/ISO, CAT, HSK, DIN 2080

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Families on this page: BT ISO 7388/2-JSK ISO 7388/1-ACAT ANSI B5.50HSK ISO 12164-1 (DIN 69893-1)DIN 2080

BT shank

Drawing

BT shank

Dimensions

All dimensions in mm

BT shank dimensions, sizes 30 to 50
BT No.	30	35	40	45	50
D	31.75	38.10	44.45	57.15	69.75
L±0.2	48.4	56.4	65.4	82.8	101.8
d1H8	12.5	12.5	17	21	25
G	M12		M16	M20	M24
D1h8	46	53	63	85	100
f±0.2	20	22	25	30	35
v±0.1	13.6	14.6	16.6	21.2	23.2
w	8	10		12	15
y±0.4	2			3
t-0.2	16.3	19.6	22.6	29.1	35.4
bH12	16.1			19.3	25.7

BT shank dimensions, sizes 30 to 50
BT No.	D	L	d1	G	D1	f	v	w	y	t	b
BT No.	D	±0.2	H8	G	h8	±0.2	±0.1	w	±0.4	-0.2	H12
30	31.75	48.4	12.5	M12	46	20	13.6	8	2	16.3	16.1
35	38.10	56.4	12.5	M12	53	22	14.6	10		19.6
40	44.45	65.4	17	M16	63	25	16.6	10		22.6
45	57.15	82.8	21	M20	85	30	21.2	12	3	29.1	19.3
50	69.75	101.8	25	M24	100	35	23.2	15	3	35.4	25.7

BT shank

Coolant forms

FORM ADCoolant thru centre

FORM AD+B LBCoolant thru flange

FORM AD+B LB-YCoolant thru flange

FORM AD+B LB-XCoolant thru flange

SK shank

Drawing

SK shank

Dimensions

All dimensions in mm

SK shank dimensions, sizes 30 to 50
SK/ISO No.	30	40	45	50
D	31.75	44.45	57.15	69.75
L-0.3	47.8	68.4	82.7	101.75
d1H7	13	17	21	25
G	M12	M16	M20	M24
D1h8	50	63.55	82.55	97.50
D2Max	45.0	50.0	63.0	80.0
t-0.4	16.4	22.8	29.1	35.5
t1-0.4	19.0	25.0	31.3	37.7
bH12	16.1	16.1	19.3	25.7
K-0.3	15.00	18.5	24.0	30.0

SK shank dimensions, sizes 30 to 50
SK/ISO No.	D	L	d1	G	D1	D2	t	t1	b	K
SK/ISO No.	D	-0.3	H7	G	h8	Max	-0.4	-0.4	H12	-0.3
30	31.75	47.8	13	M12	50	45.0	16.4	19.0	16.1	15.00
40	44.45	68.4	17	M16	63.55	50.0	22.8	25.0	16.1	18.5
45	57.15	82.7	21	M20	82.55	63.0	29.1	31.3	19.3	24.0
50	69.75	101.75	25	M24	97.50	80.0	35.5	37.7	25.7	30.0

SK shank

Coolant forms

FORM ADCoolant thru centre

FORM AD+B LBCoolant thru flange

FORM AD+B LB-YCoolant thru flange

FORM AD+B LB-XCoolant thru flange

CAT shank

Drawing

CAT shank

Dimensions

All dimensions in INCH

CAT shank dimensions, sizes 30 to 50
CAT No.	30	40	45	50
D	1.250	1.750	2.250	2.750
L±0.005	1.875	2.687	3.250	4.000
d1+0.015	0.516	0.641	0.766	1.031
GUNC-2B	0.500-13	0.625-11	0.750-10	1.000-8
D1±0.002	1.812	2.500	3.250	3.875
D2±0.005	1.250	1.750	2.250	2.750
t-0.015	0.640	0.890	1.140	1.390
t1-0.015	0.735	0.985	1.235	1.485
b±0.010	0.645	0.645	0.770	1.020

CAT shank dimensions, sizes 30 to 50
CATNo.	D	L	d1	G	D1	D2	t	t1	b
CATNo.	D	±0.005	+0.015	UNC-2B	±0.002	±0.005	-0.015	-0.015	±0.010
30	1.250	1.875	0.516	0.500-13	1.812	1.250	0.640	0.735	0.645
40	1.750	2.687	0.641	0.625-11	2.500	1.750	0.890	0.985	0.645
45	2.250	3.250	0.766	0.750-10	3.250	2.250	1.140	1.235	0.770
50	2.750	4.000	1.031	1.000-8	3.875	2.750	1.390	1.485	1.020

HSK-A shank

Drawing

HSK-A shank

Dimensions

All dimensions in mm

HSK-A shank dimensions, sizes 50 to 100
HSK-A No.	50	63	80	100
D	38	48	60	75
H	5.0	6.3	8.0	10.0
D1h10	50	63	80	100
D2Max	42	53	68	88
L-0.2	25	32	40	50
L1Min	42			45
f-0.1	26			29
V±0.1	18			20
Y1+0.2	4.5	6.0	8.0	10.0
Y2+0.2	7.5	10	12	15
b1±0.04	10.54	12.54	16.04	20.02
b2H10	12	16	18	20
b3H10	14	18	20	22
K-0.3	15.5	20.0	25.0	31.5
t-0.2	21.0	26.5	34.0	44.0
G	M16x1	M18x1	M20X1.5	M24X1.5

HSK-A shank dimensions, sizes 50 to 100
HSK-A No.	D	H	D1	D2	L	L1	f	V	Y1	Y2	b1	b2	b3	K	t	G
HSK-A No.	D	H	h10	Max	-0.2	Min	-0.1	±0.1	+0.2	+0.2	±0.04	H10	H10	-0.3	-0.2	G
50	38	5.0	50	42	25	42	26	18	4.5	7.5	10.54	12	14	15.5	21.0	M16x1
63	48	6.3	63	53	32				6.0	10	12.54	16	18	20.0	26.5	M18x1
80	60	8.0	80	68	40				8.0	12	16.04	18	20	25.0	34.0	M20X1.5
100	75	10.0	100	88	50	45	29	20	10.0	15	20.02	20	22	31.5	44.0	M24X1.5

HSK-B shank

Drawing

HSK-B shank

Dimensions

All dimensions in mm

HSK-B shank dimensions, sizes 50 to 100
HSK-B No.	50	63	80	100
D	30	38	48	60
H	5.0	6.3	8.0	10.0
D1h10	50	63	80	100
D2Max	42	53	67	85
L-0.2	20	25	32	40
L1Min	42			45
f-0.1	26			29
V±0.1	18			20
bH8	12.00	16.00	18.00	20.00
K-0.3	15.5	20.0	25.0	31.5
t-0.2	20.0	25.0	31.5	40.0

HSK-B shank dimensions, sizes 50 to 100
HSK-B No.	D	H	D1	D2	L	L1	f	V	b	K	t
HSK-B No.	D	H	h10	Max	-0.2	Min	-0.1	±0.1	H8	-0.3	-0.2
50	30	5.0	50	42	20	42	26	18	12.00	15.5	20.0
63	38	6.3	63	53	25				16.00	20.0	25.0
80	48	8.0	80	67	32				18.00	25.0	31.5
100	60	10.0	100	85	40	45	29	20	20.00	31.5	40.0

DIN 2080 shank

Deckel Maho version, grooved pilot

DIN 2080 shank

Standard version, plain pilot

DIN 2080 shank

Dimensions

All dimensions in mm

DIN 2080 shank dimensions, sizes 30 to 50
ISO No.	30	40	45	50
D	31.75	44.45	57.15	69.75
LMax	70	95	110	130
L1	50	67	86	105
d1a10	17.4	25.3	32.4	39.6
G	M12	M16	M20	M24
D1h8	48	60	77	97
a+0.1	9.6	11.6	13.2	15.2
b±0.2	8.0	10.0	10.0	12.0
y±0.4	1.6		3.2
tMax	16.2	22.5	29	35.3
bH12	16.1		19.3	25.7

DIN 2080 shank dimensions, sizes 30 to 50
ISO No.	D	L	L1	d1	G	D1	a	b	y	t	b
ISO No.	D	Max	L1	a10	G	h8	+0.1	±0.2	±0.4	Max	H12
30	31.75	70	50	17.4	M12	48	9.6	8.0	1.6	16.2	16.1
40	44.45	95	67	25.3	M16	60	11.6	10.0	1.6	22.5	16.1
45	57.15	110	86	32.4	M20	77	13.2	10.0	3.2	29	19.3
50	69.75	130	105	39.6	M24	97	15.2	12.0	3.2	35.3	25.7

Enquiries

Contact

Shantanu Inamdar 95384 56478

D-74&75, Dutch Industrial EstateUdyambag, Belgaum, India-590008

shantanu@ptpcnctoolings.com

Spindle Shank Standards

All shanks

Drawing

Dimensions

Coolant forms

Drawing

Dimensions

Coolant forms

Drawing

Dimensions

Drawing

Dimensions

Drawing

Dimensions

Deckel Maho version, grooved pilot

Dimensions

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